In the run-up to the test, we defined practical requirements and the following test criteria:
- Reading experience
- Picture quality
- Battery performance
In order to be able to evaluate these criteria, we have defined several tests for the e-book readers. First, the scope of delivery is checked and settings and storage space are checked. As soon as the devices are ready for operation, user-friendliness and an overview of the menu navigation are assessed. After books are purchased and downloaded with the devices from the respective shops, the reading experience is evaluated. The touch function of the display, the resolution, and the brightness levels are checked.
In addition, it is tested how well the e-books fit in the hand. In further runs, it will also be tested whether the purchased books can also be downloaded from the PC to the devices and how well PDF documents can be displayed by the e-books.
In order to rule out errors and to ensure the stress of everyday use, each test takes place in several stages.
The test criteria receive percentages depending on their importance. The final grade is then objectively calculated from the test criteria using an algorithm.
Our product selection is based on an observation of the current market. In addition to popular branded products, we also include insider tips in our selection. Criteria such as price and range of functions are an important factor for us. The test field is also determined by analysis and evaluation of customer reviews and external tests (e.g. Stiftung Warentest).
The devices are purchased anonymously or lent to us by the manufacturer. Dealers and manufacturers have no influence on the tests and our evaluation.
As soon as new relevant products come onto the market, our test field is extended by these. The new products go through the same test as the already tested devices.